CN104451451A - Stainless steel used for preparing spokes and application thereof - Google Patents
Stainless steel used for preparing spokes and application thereof Download PDFInfo
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- CN104451451A CN104451451A CN201510013326.2A CN201510013326A CN104451451A CN 104451451 A CN104451451 A CN 104451451A CN 201510013326 A CN201510013326 A CN 201510013326A CN 104451451 A CN104451451 A CN 104451451A
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Abstract
The invention discloses stainless steel used for preparing spokes. The stainless steel is formed by the following alloy elements by mass, wherein the alloy elements comprise C with the mass percentage smaller than or equal to 0.1, Si with the mass percentage smaller than or equal to 0.5, 2-2.4% of Mn, 16-18% of Cr, 6-6.8% of Ni, 1.5-2.5% of Nb, 0.5-1.5% of Mo, 0.08-0.15% of N, P+S with the mass percentage smaller than or equal to 0.06, and the balance Fe. After the stainless steel is machined into the spokes, the spokes can be high in strength toughness, excellent in corrosion resistance and machinability, and equivalent to and even better than existing similar products at home and abroad in the aspect of performance.
Description
Technical field
The invention belongs to inorganic alloys Material Field, be specifically related to a kind of stainless steel for the preparation of spoke and application thereof.
Background technology
Spoke is one of key part affecting spoke type Bicycles and Motorcycles use properties, in use procedure its most normal produced problem have get rusty, fracture etc., these problems not only affect attractive in appearance, and are unfavorable for the comfortableness that drives and security.Spider materials is the deciding factor of spoke performance.In recent years, spider materials is changed to stainless steel gradually by traditional carbon steel.Compared to carbon steel product, Stainless Steel Products has a clear superiority in the production technique feature of environmental protection, mechanical strength, solidity to corrosion, outward appearance etc.Have the spoke stainless steel of the multiple trade mark at present both at home and abroad, such as SUS304,1Cr18Ni9Ti, 1Cr18Ni9Mo, 12Cr18Ni9,06Cr18Mn3Ni8N etc., but finding the more superior stainless material for the preparation of spoke of performance remains a research and development focus in the industry.
Summary of the invention
The object of the present invention is to provide a kind of stainless steel that can be used for preparing spoke completely newly, its Composition Design makes it after being processed into spoke, spoke product can have high-strong toughness and superior erosion resistance, and processing characteristics is excellent, performance meets or exceeds domestic and international existing like product.
In order to realize object of the present invention, adopt following technical proposal.
For the preparation of a stainless steel for spoke, be made up of the alloying element of following mass percent: C≤0.1, Si≤0.5, Mn 2.0-2.4, Cr 16-18, Ni 6.0-6.8, Nb 1.5-2.5, Mo 0.5-1.5, N 0.08-0.15, P+S≤0.06, Fe surplus.
Preferably, the above-mentioned stainless steel for the preparation of spoke is made up of the alloying element of following mass percent: C 0.04-0.08, Si 0.2-0.4, Mn 2.0-2.4, Cr 16-17, Ni 6.0-6.8, Nb 1.8-2.2, Mo 0.8-1.2, N 0.08-0.12, P+S≤0.05, Fe surplus.
Innovation of the present invention is improve the composition of stainless steel interalloy element and optimize, and using C, Mn, Cr, Ni, Nb, Mo and N as main alloying element, and determines optimum content formula by large component analysis.
In Stainless Steel Alloy, the kind of alloying element and the impact of content on stainless steel performance are the subjects of its complexity of gate pole, stainless steel performance be by Fe and alloying element each other coordinated after entirety embody.Be not limited to any existing theory, researchist of the present invention finds, by adopting above-mentioned formation, when stainless steel of the present invention is processed into spoke, particularly tensile strength properties is excellent for the mechanical property of product, obviously be better than existing stainless steel product, and there is splendid bending fatigue strength and corrosion resistance nature.
Therefore, another object of the present invention is to provide the application of above-mentioned stainless steel in spoke.
Utilize the technique of stainless material making spoke very ripe, existing extensively record in prior art, this is very easy to know to those skilled in the art.
Preferably, the application of above-mentioned stainless steel in spoke can comprise following process steps:
(1) select Φ 5.0-6.5mm and have above-mentioned alloying element form STAINLESS STEEL WIRE;
(2) STAINLESS STEEL WIRE is carried out multi-pass continuous drawing on drawing wire machine, wherein the draft of the first passage controls within the scope of 24-30%, the draft of back pass successively successively decreases, after 6-9 passes of drawing, obtain work in-process, these work in-process reserve the product that gently the pull into draft of 16-20% relative to the size of finished product;
(3) clean surface of semi-finished and dry, then passed into furnace temperature and be 1020-1080 DEG C and keep in stove in the continuous heat treating furnace of inert atmosphere, steel wire at in-furnace time 1-4 minute, water-cooled, drying after coming out of the stove;
(4) adopt drawing wire machine to carry out single pass drawing to the steel wire that step (3) obtains, draft is 16-20% reserved in step (2), obtains stainless steel wire for spoke use finished product.
Utilize the stainless steel wire for spoke use of step (4), coordinate aftertreatment technology (as cut off, taking the lead, bend, tapping shaping etc.), obtain final spoke.These aftertreatment technologys are all the routine techniquess that spoke manufactures field.
In field of metallurgy, the preparation technology of STAINLESS STEEL WIRE/wire rod is very ripe.When elementary composition and structure is clear and definite, the preparation technology of STAINLESS STEEL WIRE/wire rod belongs to ordinary technical knowledge/routine techniques concerning the technician of field of metallurgy.Contribution of the present invention is mainly that stainless new element is formed, and does not need special wire making process, only needs to adopt conventional STAINLESS STEEL WIRE preparation technology.Here, in this specification sheets to this no longer apply state.
Consider from spoke tooling cost, spoke is on the market based on Φ 1.8-3mm at present, therefore selects the STAINLESS STEEL WIRE of Φ 5.0-6.5mm comparatively suitable in step (1).
Optionally, before carrying out drawing to STAINLESS STEEL WIRE, film agent (Phosphating Solution) can be adopted to carry out pre-treatment to its surface, i.e. epithelium process (bonderizing), to improve its oilness in following process.
In step (2), drawing wire machine can be those continuous multi-pass drawing wire machine, such as straight-line machine, pulley-type wire-drawing machines, water tank type wire drawing machines etc. conventional in this area.The drawing wire machine be suitable for easily is determined to those skilled in the art.
Thermal treatment process in step (3) guarantees the key of wire drawing quality, to mechanical property and the surface quality important of steel wire.In the present invention, cleaning surface of semi-finished and after drying, continuous bright thermal treatment implemented to it.Furnace temperature is preferably 1040-1060 DEG C, and inert atmosphere can be nitrogen or argon gas, and steel wire is preferably 1.5-3.0 minute at in-furnace time.
In step (4), inverted wire-drawing machine can be adopted to carry out last single pass drawing.
Utilize the spoke that stainless steel of the present invention is processed into, surface quality is good, mechanical property is good, the tensile strength of Φ 1.8-3mm product is all at more than 1200MPa, close even more than 1300Mpa, apparently higher than the stainless steel product of equivalent specifications size, fatigue-bending test result and excellent anti-corrosion performance.It is with the obvious advantage that stainless steel of the present invention makes field at spoke, is specially adapted to Bicycles and Motorcycles spoke.
Embodiment
Below in conjunction with embodiment to be described in further detail the present invention, but limiting the scope of the invention should not be understood as.
embodiment 1
(1) select the STAINLESS STEEL WIRE of Φ 5.5mm, it is made up of the alloying element of following mass percent: C 0.05, Si 0.3, Mn 2.2, Cr 17, Ni 6.4, Nb 2.0, Mo 1.0, N 0.1, P 0.03, S 0.02, Fe surplus;
(2) above-mentioned STAINLESS STEEL WIRE is carried out multi-pass continuous drawing on LT-560 water tank type wire drawing machine, wherein the draft of the first passage controls 25%, the draft of back pass successively successively decreases, and after 7 passage continuous drawings, obtains the process wire of Φ 2.2mm;
(3) clean surface of semi-finished and dry, then passed into furnace temperature and be 1040 DEG C and keep in stove in the continuous heat treating furnace of nitrogen atmosphere, steel wire in-furnace time 2.0 minutes, water-cooled, drying after coming out of the stove;
(4) adopt inverted wire-drawing machine to carry out single pass drawing to the steel wire that step (3) obtains, obtain the stainless steel wire for spoke use that diameter is 2.0mm.
embodiment 2
(1) select the STAINLESS STEEL WIRE of Φ 6.0mm, it is made up of the alloying element of following mass percent: C 0.06, Si 0.3, Mn 2.1, Cr 17, Ni 6.6, Nb 2.2, Mo 1.2, N 0.08, P 0.02, S 0.02, Fe surplus;
Phosphating Solution is adopted to carry out pre-treatment to wire surface, then for subsequent use after washing, drying;
(2) STAINLESS STEEL WIRE is carried out multi-pass continuous drawing on LZ600 type straight drawing machine, wherein the draft of the first passage controls 30%, and the draft of back pass successively successively decreases, and after 6 passes of drawing, obtains the process wire of Φ 2.19mm;
(3) clean surface of semi-finished and dry, then passed into furnace temperature and be 1060 DEG C and keep in stove in the continuous heat treating furnace of nitrogen atmosphere, steel wire in-furnace time 2.5 minutes, water-cooled, drying after coming out of the stove;
(4) adopt inverted wire-drawing machine to carry out single pass drawing to the steel wire that step (3) obtains, obtain the stainless steel wire for spoke use that diameter is 2.0mm.
embodiment 3
(1) select the STAINLESS STEEL WIRE of Φ 6.5mm, it is made up of the alloying element of following mass percent: C 0.08, Si 0.4, Mn 2.3, Cr 17, Ni 6.6, Nb 2.0, Mo 1.1, N 0.11, P 0.02, S 0.02, Fe surplus;
Phosphating Solution is adopted to carry out pre-treatment to wire surface, then for subsequent use after washing, drying;
(2) STAINLESS STEEL WIRE is carried out multi-pass continuous drawing on LZ600 type straight drawing machine, wherein the draft of the first passage controls 30%, and the draft of back pass successively successively decreases, and after 7 passes of drawing, obtains the process wire of Φ 2.52mm;
(3) clean surface of semi-finished and dry, then passed into furnace temperature and be 1050 DEG C and keep in stove in the continuous heat treating furnace of nitrogen atmosphere, steel wire in-furnace time 3.0 minutes, water-cooled, drying after coming out of the stove;
(4) adopt inverted wire-drawing machine to carry out single pass drawing to the steel wire that step (3) obtains, obtain the stainless steel wire for spoke use that diameter is 2.3mm.
performance characterization
1, mechanical property
According to GB/T228.1-2010 "
metal material stretching testpart 1: room temperature test method " and GB/T238-2002 " the metallic substance wire rod reverse bending test method " stainless steel wire for spoke use obtained to embodiment 1-3 characterize, draw tensile strength, elongation after fracture and number of bends, result is as shown in table 1.
Table 1
| Embodiment | Tensile strength, Rm/Mpa | Elongation after fracture, A/% | Bending, secondary |
| 1 | 1240 | 14.2 | 15 |
| 2 | 1235 | 14.0 | 15 |
| 3 | 1310 | 12.3 | 14 |
As can be seen from Table 1, the tensile strength of the stainless steel wire for spoke use of embodiment 1-3 is very high, close to even having exceeded 1300MPa, far above existing like product.As a comparison, application number be 200710023511.5 Chinese invention patent application disclose a kind of stainless steel wire for spoke use, the tensile strength of the Stainless Steel Wire of its close specification is only about 1150MPa (can see its specification sheets table 1 " tensile test ").Meanwhile, the stainless steel wire for spoke use utilizing stainless steel of the present invention to be processed into also shows very excellent performance in elongation after fracture and bending fatigue strength.
2, surface quality and microstructure
The stainless steel wire for spoke use surface-brightening that embodiment 1-3 is obtained, do not exist scab, crackle, burr, pockmark, the injurous defect such as scuffing.
According to
gB/T13298-1991 " the metal microstructure method of inspection" microstructure of the stainless steel wire for spoke use that embodiment 1-3 obtains is tested, result display is single austenite structure, has no other tissue and exists.
3, corrosion resistance nature
With reference to GB/T10125-2012 " artificial atmosphere corrosion test salt-fog test ", the stainless steel wire for spoke use obtained to embodiment 1-3 carries out salt spray corrosion test, evaluates its corrosion resistance nature.Test conditions is as shown in table 2.
Table 2
| Temperature | The concentration of sodium chloride solution | PH value | Test period |
| 35℃ | 51g/L | 7.0 | 144 hours |
Assay shows, and the stainless steel wire for spoke use surface utilizing stainless steel of the present invention to be processed into is without any rust staining, and outward appearance does not have considerable change with quality compared with before test.
In summary, by improving alloying element composition, stainless steel of the present invention is particularly suitable as spider materials, the spoke excellent in mechanical performance be processed into it, there is high-strong toughness and superior erosion resistance, and surface quality and processing characteristics excellent, overall performance, apparently higher than the stainless steel product of domestic and international equivalent specifications, is expected to be promoted at spoke manufacture field and apply.
Claims (5)
1. for the preparation of a stainless steel for spoke, be made up of the alloying element of following mass percent: C≤0.1, Si≤0.5, Mn 2.0-2.4, Cr 16-18, Ni 6.0-6.8, Nb 1.5-2.5, Mo 0.5-1.5, N 0.08-0.15, P+S≤0.06, Fe surplus.
2. the stainless steel for the preparation of spoke according to claim 1, it is characterized in that, be made up of the alloying element of following mass percent: C 0.04-0.08, Si 0.2-0.4, Mn 2.0-2.4, Cr 16-17, Ni 6.0-6.8, Nb 1.8-2.2, Mo 0.8-1.2, N 0.08-0.12, P+S≤0.05, Fe surplus.
3. the application of the stainless steel described in claim 1-2 in spoke.
4. the application according to claim 1-3, is characterized in that: spoke is bicycle spoke or motorcycle spoke.
5. the application according to claim 1-4, is characterized in that: spoke diameter is 1.8-3mm.
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| CN201510013326.2A CN104451451B (en) | 2015-01-12 | 2015-01-12 | A kind of stainless steel for the preparation of spoke and application thereof |
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| CN201510013326.2A CN104451451B (en) | 2015-01-12 | 2015-01-12 | A kind of stainless steel for the preparation of spoke and application thereof |
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| CN104451451A true CN104451451A (en) | 2015-03-25 |
| CN104451451B CN104451451B (en) | 2015-10-28 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840366A (en) * | 1968-06-10 | 1974-10-08 | Hitachi Metals Ltd | Precipitation hardening stainless steel |
| JPS508007A (en) * | 1973-05-25 | 1975-01-28 | ||
| JPS508007B1 (en) * | 1970-10-12 | 1975-04-01 | ||
| JPS51137611A (en) * | 1975-05-23 | 1976-11-27 | Daido Steel Co Ltd | High-strength stainless steel |
| JP2003226943A (en) * | 2002-02-06 | 2003-08-15 | Toshiba Corp | High strength, high corrosion resistance steel, production method therefor and geothermal turbine blade |
| CN101067187A (en) * | 2007-06-04 | 2007-11-07 | 江阴康瑞不锈钢制品有限公司 | Stainless steel wire for spoke use and producing method thereof |
| CN102162074A (en) * | 2011-03-29 | 2011-08-24 | 陈才金 | In-situ cast stainless steel |
| CN102712984A (en) * | 2010-01-11 | 2012-10-03 | 山特维克知识产权股份有限公司 | Music string |
-
2015
- 2015-01-12 CN CN201510013326.2A patent/CN104451451B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840366A (en) * | 1968-06-10 | 1974-10-08 | Hitachi Metals Ltd | Precipitation hardening stainless steel |
| JPS508007B1 (en) * | 1970-10-12 | 1975-04-01 | ||
| JPS508007A (en) * | 1973-05-25 | 1975-01-28 | ||
| JPS51137611A (en) * | 1975-05-23 | 1976-11-27 | Daido Steel Co Ltd | High-strength stainless steel |
| JP2003226943A (en) * | 2002-02-06 | 2003-08-15 | Toshiba Corp | High strength, high corrosion resistance steel, production method therefor and geothermal turbine blade |
| CN101067187A (en) * | 2007-06-04 | 2007-11-07 | 江阴康瑞不锈钢制品有限公司 | Stainless steel wire for spoke use and producing method thereof |
| CN102712984A (en) * | 2010-01-11 | 2012-10-03 | 山特维克知识产权股份有限公司 | Music string |
| CN102162074A (en) * | 2011-03-29 | 2011-08-24 | 陈才金 | In-situ cast stainless steel |
Non-Patent Citations (1)
| Title |
|---|
| 陈兆泰 等: "1Cr18不锈钢冶炼工艺中的问题讨论", 《江苏冶金》, 31 December 1988 (1988-12-31), pages 36 - 40 * |
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| CN104451451B (en) | 2015-10-28 |
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